Rohde & Schwarz SCV8000E/R, System Manual

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Chapter 1 Safety Instructions
2104.6536.72 - 1.4 - E-1
4 Special Danger Warnings
4.1 Hazards due to AC Supply Voltage
There is a risk of electric shock with any V
rms
> 30 V AC or V > 60 V DC voltage. Appropri-
ate measures must be taken to prevent exposure to any danger when working with voltages
that bear the risk of electric shock. Never work on live parts unless specifically required and
only if the special safety precautions are complied with.
4.1.1 AC Power Supply

Before connecting the equipment to the AC power supply, make sure that the AC supply
data specified on the system or equipment matches the rated data of the local AC sup-
ply. The supply circuit must be protected by fuses against overloading and short circuits
at all times.

Miniature modules have neutral conductor fuses. As a result, the power supply may still
be connected even after interruption of the circuit by a fuse.
4.1.2 Replacing Fuses

Replace the safety fuses accessible in the operator area only if no voltage is being ap-
plied to the instruments. The safety fuses may be replaced only by fuses with identical
electric data, identical switching characteristics and identical switch-off capacity.

Motor and line circuit breakers accessible in the transmitter's operator area may be op-
erated. If their response range is selectable, do not change the settings made by the
manufacturer. If the settings are accidentally changed, reset them by using the correct
values specified in this documentation.
4.2 Hazards due to High-Energy Circuits
The instruments include low-voltage circuits which can be fed from an extremely low-imped-
ance voltage source (e.g. amplifier operating voltage). These circuits conduct dangerously
large amounts of energy. We handle these circuits in the same manner as circuits with volt-
ages that bear the risk of electric shock. They are usually covered and thus protected
against accidental contact. The cover comes with a warning label.
Practical experience has repeatedly shown that a short circuit caused by metal tools can
cause severe burns. For safety reasons, high-energy circuits are protected by covers and
are thus not accessible within the operator area of the instruments.